diff --git a/internal/githubv4mock/query.go b/internal/githubv4mock/query.go
index 7b265358d..831f4a4b5 100644
--- a/internal/githubv4mock/query.go
+++ b/internal/githubv4mock/query.go
@@ -154,4 +154,4 @@ func writeQuery(w io.Writer, t reflect.Type, inline bool) {
 	}
 }
 
-var jsonUnmarshaler = reflect.TypeOf((*json.Unmarshaler)(nil)).Elem()
+var jsonUnmarshaler = reflect.TypeFor[json.Unmarshaler]()